Burglar bar



June 17, 1947. F. L.-HAWKINS ET AL 2,422,547

' BURGLAR BAR Filed oct. 6, 1945 z'sheets-sheet 1 INVENTOR. F/o' d L. Hawk/n5 BY WIfi/am D.

June 17, 1947. F. L. HAWKINS ETAL 2,422,547

1 BURGLAR BAR Filed 001;. 6, 1945 2 Sheets-Sheet 2 INVENTOR.

mm D. fhi/ll' os' Patented June 17, 1947 ATENT OFFICE BURGLAR BAR Floyd L. Hawkins and William D. Phillips, Birmingham, Ala.

8 Claims.

This invention relates to that type of window guard employed to impede the entrance of pilferers into a residence, commonly known as burglar bars, and has for an object the provision of an article of manufacture of the character designated which shall be simple and rugged of construction, readily mounted in position in a window and in which shall be adjustable whereby it may be installed in various sizes of Windows.

A further object of our invention i to provide burglar bars which shall be adjustable as to width and held in adjusted position by concealed secur ing means accessible only from the interior of the room in which they are installed, which may be readily removed whenever desired, as for cleaning or painting.

A still further object of our invention is to pro vide burglar bars which shall be adjusted as to width and which shall include ornamental grill work so mounted thereon as to permit adjust-- ment thereof with removal of the grill.

As is well known in the art to which our invention relates, the application of burglar bars to residences and other buildings has heretofore required the manufacture of such articles in a multiplicity of sizes corresponding to the various widths of windows installed in such buildings. This has necessitated the services of a Workman to measure the various window openings in a building, then a return to a shop or place of fabrication, to make up, or select suitable sizes of such articles already made up, and taking them to the place of installation. Furthermore, Where an ornamental effect was desired, such ornamental designs were necessarily applied to the bars following their assembly.

These and other difliculties are overcome by means of our invention, in which we provide a guard embodying a plurality of pairs of overlapping, relatively, slidable horizontal bars, whereby they are extensible to fit the various sizes of windows. The ends of the bars are secured in side channels which are adapted to be secured in the usual manner in a window frame. An ornamental grill, which may assume various designs may be secured near one end of each of the extensible bars, whereby there is no interference with the grill in adjusting the guard as to width and the ornamental designs maintain their positions in symmetry with the side chain nels.

Articles embodying features of our invention are illustrated in the accompanying drawing, forming a part of this application, in which Application October 6, 1945, Serial No. 620,742

(Cl. IMF-223) Fig. 1. is a view looking down on the burglar bar assembly;

Fig. 2 is a front elevational view thereof;

Fig. 3 is a sectional View taken along the line III-III of Fig. 2;

Fig. 4 is a sectional View drawn to an enlarged scale, taken along the line IV-IV of Fig, 2; and

Figs. 5 to 8 inclusive are views similar, respectively, to Figs. 1 to 4 inclusive, showing a modified form of our invention.

Referring now to the drawing, for a better understanding of our invention, we show side channels l0 and H which are adapted to be secured to a Window frame, such as l5, in the usual manner as by screws [2 and I3. As may be seen in Fig. 1, the channels I!) and II fit between the guides 55' of the window frame when installed. Carried by the side channel l9 and appropriately secured thereto are a plurality of transversely extending bars It, 16, I! and I8. Similarly, carried by the channel II and appropriately secured thereto are cooperating transversely extending bars l9, 2!, 22 and 23 which overlap, respectively, the bars Id, 86, i7 and I8. Each of the bars 14, it, I! and i3 is provided on its end opposite the channel H with a loop 24 which extends around the bar l9. Similarly each of the bars l9, 2!, 22 and 23 are provided on its end remote from the channel It with a loop 26 which extends around the bar M whereby the transversely extending bars are slidable with respect to each other to fit various window openings. Welded to the loops 24 so as to be mounted on the outside of the bars with respect to the opening in which they are mounted is a vertically extending reinforcing rod 25. A similar reinforcing rod 39 is welded to the loops 26, so as to be on the outside of the opening. Ornamental design work 3! may be welded to the vertically extending rod 25 and 30, so as to maintain their positions in symmetry with the sides l0 and l! as they are adjusted for width.

When the guard has been installed and secured in a Window opening, as just described, the pairs of bars are held in fixed relative positions by concealed fastening means which form a very important feature of our invention. Referring to Fig. 4, we show the loop 24 encircling the bar !9. It is assumed that the bar l 4 is on the outside of the room in which the guard is installed with respect to the bar l9. On the side of the loop 24 toward the inside of the room, we provide a threaded opening 32 with a set screw 33 which may be screwed down to engage the bar IS. The

set screw 33 is preferably of the type having a socket 34 in the end thereof and is of a length so that when screwed down to engage the bar l9, its outer end is below the surface of the loop 2 4. If desired, the outer end of the opening 32 may be filled with putty or other suitable filler and the householder, knowing the location of the set screw 33, may clean out the opening 32 and insert a special tool, not shown, fitting in the socket 36 to retract the set screw 33. Such tools are not usually carried by pilferers, Furthermore, with the side channels H] and I I fitting between the guides !5', the assembly can not be removed until the set screws 33 are retracted.

Referring now to Figs. 5 to 8 inclusive, we show a modified form of our invention in which transversely extending bars 34, 36, 31 and 38 are secured by any suitable means at one end to a side channel 39 and at their opposite end to channel 4| as shown in Fig. 5, preferably to the side of the channel and on the inside of the opening. On the other side of the window opening, the side channel 42 has secured thereto transversely extending rods 63, M, Q6 and Q7 which pass through spaced openings in the channel 4! so as to be slidable with respect thereto and are joined at their opposite ends on the outside of the window opening to the side of a channel member 38. It will be seen from Fig. '7 the bars 35, 3%, 31 and 38 pass through spaced holes in the channel 0.8 so as to be slidable with respect thereto. The transversely extending bars are thus arranged in overlapping pairs, slidable with respect to each other, as described in the previous modification. They may thus be slidably adjusted to fit various window openings.

When fitted into a window opening, the bars are held in adjusted position by means of a suitable number of set screws 51 which pass through threaded openings 52 in the bars mounted toward the inside of the window openings, so as to be accessible only from the inside of the room in which the guard is installed.

below the surface of the bar through which they are screwed so that the opening, after the set screws are screwed down, may be filled and painted over and thus be concealed.

With either modification of our invention, the

vertically extending rods such as 25 and 38 in relatively inaccessible from the outside of the room in which'the burglar bar assemblyis inlle While we have shown our invention in but two forms, it will be obvious to those skilled in the art ihat. it is not so limited, but is susceptible oi various changes and modifications, without depa ting i on; the s r t th re nd We desire, therefore, that only such limitations shall be placed thereupon as are specifically set forth in the appended claims.

What we claim is:

1. A burglar bar assembly for a window opening comprising a plurality of pairs of overlapping horizontal bars oppositely disposed, relatively stationary side members to which the respective remote ends of the pairs of bars are secured, means for holding the free end of each of the bars in overlapping slidable relation with its associated bar, and securing means accessible only from inside the window opening for holding the pairs of bars against relative lateral movement.

2. A burglar bar assembly for a window opening comprising a plurality of pairs of overlapping horizontal bars, oppositely disposed relatively stationary side members to which the respective remote ends of the pairs of bars are secured, means for holding the free end of each of the bars in overlapping slidable relation with its associated bar, a pair of vertically extending reinforcing members one secured to the free end of each of the bars extending from one of said side members and the other secured to the free end of each of the bars extending from the other from inside the window opening for holding the me for holding the free end of each of the In the previous modification, the set screws are intended to pass bars in overlapping slidable relation with its as sociated bar, a pair of vertically extending reinfor tag members one secured to, the free end of each of the bars extending from one of'said side members and the other secured to the free end of each of the bars extending from the other side member, and a set screw extending through at least one of the bars from insidethe opening to engage the associated bar. r

A bu la a s l as set rt n claim 2 n w c th free end. of each bar i pr ided with a o i clin its as o i t db n and the reinforcin means comprise rods welded to the free ends of the bars.

5. A burglar bar assembly as set forth in claim 2 in which the reinforcing means comprise members welded to the free ends of the bars and having openings therein through which the associated bars pass.

6. A burglar bar assembly for a window opening comprising a plurality of pairs of overlapping r latively slidable horizontal bars, oppositely disposed stationary sidemembers toeach of whigh one end of onebar of each overlapping pair is V secu.red,'a loop on the free end'of each bar encircling the other bar of its pair, the side members being securable to the sides of the window opening, and a set screw extending through at least one of the loops from inside the opening to engage the associated bare 7. A burglar bar assembly for a'window opening comprising a plurality of pairs of overlapping relatively slidable horizontal bars; oppositely disposed stationary side members toeach of which one end, of one bar'of each overlapping pair issecured, a loop on the free end of each bar encircling the other bar of its pair, the side members being securable to the sides of the window opening, a set screw extending through at least one of the loops from inside the opening to I engage the associated bar,fthe outer end of the i ember, and securing means accessible only of bars against relative lateral movemfint.

set screw being beneath the surface of the bar when screwed down, and reinforcing members joining the free ends of the bars.

8. A burglar bar assembly for a window opening comprising a plurality of pairs of overlapping relatively slidable horizontal bars, oppositely disposed stationary side members to each of which one end of one bar of each overlapping pair is secured, a loop on the free end of each bar encircling the other bar of its pair, the side members being securable to the sides of the window opening, and a set screw extending through the uppermost and lowermost loops of the assembly from the inside of the window opening to engage the associated bars of the uppermost 15 2,284,410

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date Akass Apr. 2, 1895 Farmer May 26, 1942 Number 

